Merge pull request #682 from eZioPan/w25q32-example-patch

update example to match w25q datasheet

Author: burrbull

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
  - complete and rework Dma Stream API [#666]
  - SPI bidi takes 2 pins [#526]
+ - `Fast Read Quad I/O (EBh)` in `qspi-w25q` example now matches W25QXX datasheet. [#682]
 
 ### Fixed
 
@@ -25,6 +26,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 [#666]: https://github.com/stm32-rs/stm32f4xx-hal/pull/666
 [#677]: https://github.com/stm32-rs/stm32f4xx-hal/pull/677
 [#678]: https://github.com/stm32-rs/stm32f4xx-hal/pull/678
+[#682]: https://github.com/stm32-rs/stm32f4xx-hal/pull/682
 
 ## [v0.17.1] - 2023-07-24
 

examples/qspi-w25q.rs

@@ -123,7 +123,9 @@ where
             QspiReadCommand::new(data, QspiMode::QuadChannel)
                 .instruction(0xEB, QspiMode::SingleChannel)
                 .address(address, QspiMode::QuadChannel)
-                .dummy_cycles(6),
+                // the M0-M7 bits will be send by alternate_bytes, and the value should be 0xFX
+                .alternate_bytes(&[0xFF], QspiMode::QuadChannel)
+                .dummy_cycles(4),
         )?;
 
         Ok(())
@@ -135,7 +137,9 @@ where
                 .instruction(0xEB, QspiMode::SingleChannel)
                 .address_mode(QspiMode::QuadChannel)
                 .data_mode(QspiMode::QuadChannel)
-                .dummy_cycles(6),
+                // the M0-M7 bits will be send by alternate_bytes, and the value should be 0xFX
+                .alternate_bytes(&[0xFF], QspiMode::QuadChannel)
+                .dummy_cycles(4),
         )
     }
 }